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Finding the Fourth Proportional to 170.19, 253.98 and 147.33

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Solution

The fourth proportional to 170.19, 253.98 and 147.33 is: 219.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.19 : 253.98 = 147.33 : x
  2. Step 2: Convert to fraction form
    170.19/253.98 = 147.33/x
  3. Step 3: Cross multiply
    170.19x = 253.98 × 147.33
  4. Step 4: Simplify right side
    170.19x = 37,418.87
  5. Step 5: Solve for x
    x = 37,418.87/170.19
  6. Step 6: Final answer
    x = 219.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.